she really looks like she is starting to slab side out to me, and although her udder is not compleately ffilled or nipples separated she looks to me like she could go at any time, especially from the hooha shots. I'd watch her carefully. This from a crazy old lady that once watched a mare for over thirty days saying any time now! Some mares will deliver without a full udder just an FYI. You might also try to see if she starts squirreling her tail, that is up and down motion, or yawning.